/Engine/Source/Editor/UnrealEd/Public/FbxImporter.h
bool ReplaceSkeletalMeshSkinningImportData ( const [USkeletalMesh](API\Runtime\Engine\Engine\USkeletalMesh) * SkeletalMesh, [FSkeletalMeshImportData](API\Runtime\Engine\Rendering\FSkeletalMeshImportData) * ImportData, int32 LodIndex )